MRFZones with two rotating zones
Hello everybody! I have a mixer tank with two impellers in the same axis (0 1 0) at a different high. The solver only recognizes the first rotating zone. My MRFZones file is:
1 ( IMPELLER1ST { // Fixed patches (by default they 'move' with the MRF zone) nonRotatingPatches (SLIPWALL BAFFLE WALL CYCLIC); origin origin [0 1 0 0 0 0 0] (0 0 0); axis axis [0 0 0 0 0 0 0] (0 1 0); omega omega [0 0 -1 0 0 0 0] 10.5; } ) 2 ( IMPELLER2ND { // Fixed patches (by default they 'move' with the MRF zone) nonRotatingPatches (SLIPWALL BAFFLE WALL CYCLIC); origin origin [0 1 0 0 0 0 0] (0 0 0); axis axis [0 0 0 0 0 0 0] (0 1 0); omega omega [0 0 -1 0 0 0 0] 10.5; } ) I have tried to put in the IMPELLER2ND axis (0 -1 0) but it doesnt work. I have tried also a lot of differents forms but no one work. I hope your suggestions. Thanks in advance! |
Could you please post the error also. That would be most helpful...
Try this...constant/MRFZones file: 2 ( IMPELLER1ST { // Fixed patches (by default they 'move' with the MRF zone) nonRotatingPatches (SLIPWALL BAFFLE WALL CYCLIC); origin origin [0 1 0 0 0 0 0] (0 0 0); axis axis [0 0 0 0 0 0 0] (0 1 0); omega omega [0 0 -1 0 0 0 0] 10.5; } IMPELLER2ND { // Fixed patches (by default they 'move' with the MRF zone) nonRotatingPatches (SLIPWALL BAFFLE WALL CYCLIC); origin origin [0 1 0 0 0 0 0] (0 0 0); axis axis [0 0 0 0 0 0 0] (0 1 0); omega omega [0 0 -1 0 0 0 0] 10.5; } ) Make sure that the the MRF zones are included in the constant/polyMesh/cellZones Hope this helps ! Regards, -- Amol |
I dont have any error, It just when I see the results only in the bottom part of the tank the flow field is rotating. In the upper part is static. I have tried the configuration that you have written and it doesnt work.
Any other possibility? |
Ok, problem solved. you were right. I have just try again with your configuration and all is ok, sorry. Thank you very much!!
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Two propellers simulation
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Hi,
I am running two propellers simulation, but only one propeller rotating! I am using pimpleDyMFoam (from propeller tutorial). This is my dynamicMeshDict file: Code:
dynamicFvMesh solidBodyMotionFvMesh; Thank you ! Simone |
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Please check what input needs to be added to the dict file to tell the solver that there are two rotating zones present and not one. |
help
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I need the same help, if anyone can shed some light on this |
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did you solve the problem? Which OpenFOAM version are you using? I also want to use multiple rotating zones but i can't find any reference on how to do it in OpenFOAM 5/6. In Foam-Extend-4.0 it is very easy with the turboFVMesh. Thank you! Andreas |
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im using v5 - I think - blue cfd 2017. |
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Look into the multiMotion solver. Mohamad |
I can recommend this link: https://openfoamwiki.net/index.php/P...dyMotionFvMesh
Let me share a working example of a dynamicMeshDict with 2 rotating zones: Code:
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I published CFD results using OpenFOAM and the moving mesh approach here:
https://asmedigitalcollection.asme.o...12A002/1120033 It worked well to predict the turbulent flow field downstream of active turbulence generators. In the paper we validated our CFD results with experimental data. Quote:
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The applications of these moving mesh settings was published in this journal paper (open-access).
https://asmedigitalcollection.asme.o...nd-1D-Hot-Wire |
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